What is a trademark search?

As a minimum a trademark search is a search for all individuals or companies which have registered or filed the trademark you are interested in at the local intellectual property office. As trademarks are jurisdictional rights, a search is usually conducted at each intellectual property office (IPO) or trademark office (TMO) in each country of interest. Conducting a trademark search at the intellectual property office alone is not sufficient, for a coherent search, one should also check the trademarks in use and not registered, trade names, business names, trade literature etc….